Ionic pairs in polyphosphoric acid (PPA)-modified bitumen:: Insights from model compounds

被引：21

作者：

Masson, J-F. ^{[1
]}

Gagne, Matthew ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Res Construct, Ottawa, ON K1A 0R6, Canada

来源：

ENERGY & FUELS | 2008年 / 22卷 / 05期

关键词：

Bituminous materials;

D O I：

10.1021/ef8002526

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The reaction between polyphosphoric acid (PPA) and bitumen is ill understood. To help define possible reactions, model compounds, isoquinoline and 1-methyl-2-quinolinone, were reacted with PPA. Both compounds formed salts with PPA. An infrared study of the salts revealed that PPA releases a terminal proton, as opposed to an internal one, and that, with isoquinoline, the charges of the ionic pair are localized but stabilized by bound water. With 1-methyl-2-quinolinone, the charges are delocalized and stabilized by resonance. This study demonstrates that ionic pairs need an environment of high dielectric constant to form in bitumen.

引用

页码：3390 / 3394

页数：5

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